exam Maths Puzzle Numerical Ability

How many miles dis Msr. McCarthy travel if she drove30 miles per hour for 3/4 hour and 55 miles per hour for 1 1/2 hours?

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27(3^3x+1) = 3 a cylinder has a diamter of 6 inches and a height of 10 inches. a manufacturer must roll the cylinder in a press to reduce the diameter by 50 percent. this will change the height b